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The perimeter of a geometrical shape is the total length of its boundary. In this step-by-step guide, you learn how to find the perimeter of a right-angled triangle.
A semicircle is a semicircle. It is a two-dimensional shape that is formed when a circle is cut into two equal parts. In this step-by-step guide, you will learn how to find the area and perimeter of the semicircle.
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